JP2005225617A - Sharp inclination belt conveyor using thermosensitive adhesive tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sharp inclination belt conveyor using thermosensitive adhesive tape. <P>SOLUTION: In this sharp inclination belt conveyor 1, a conveyor belt 2 for carrying articles 14 from a low position to a high position, or from a high position to a low position is formed of a metal material having excellent heat conductivity, and a thermosensitive adhesive tape 8 having a thermosensitive adhesive layer 12 that is reversibly changed from an adhesive state to a non-adhesive state based on temperature change is applied on a carrying surface 6 of the conveyor belt 2. A carrying section AB in the sharp inclination belt conveyor 1 is composed of an inclined carrying section AC on the upstream side and a horizontal carrying section CB on the downstream side. At the upstream side of a carrying start point A of the inclined carrying section AC, an adhesive state forming means 9 to heat the thermosensitive adhesive layer 12 on the thermosensitive adhesive tape 8 to be adhesive is disposed. In the horizontal carrying section CD, a non-adhesive state forming means 10 to make the thermosensitive adhesive layer 12 of the thermosensitive adhesive tape 8 to be non-adhesive is disposed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a steep angle elevating belt conveyor using a temperature-sensitive adhesive tape.

  As is well known, a steep angle elevating belt conveyor is used as one of means for conveying a conveyed product from a low position to a high position or from a high position to a low position in a product manufacturing line, a shipping line, etc. Belt conveyors have a large inclination angle of 15 degrees or more on the conveyor surface, and transported items easily slip off from the inclined conveyor surface, so that a cross or groove is formed on the conveyor belt conveyor surface, or a material with a high friction coefficient is used. Various devices have been made, such as using it.

  Specifically, the wavy objects are erected on the left and right edges of the conveyor belt, and the conveying object slips from the inclined conveying surface by erecting the horizontal bars at predetermined intervals in the longitudinal direction of the conveyor belt. A steep angle elevating belt conveyor (see Patent Document 1) that is prevented from falling or two belt conveyors are arranged facing each other, and the conveyed product does not slip off from the inclined conveying surface by sandwiching the conveyed product from above and below. A steep angle elevating belt conveyor (see Patent Document 2) has been proposed.

  On the other hand, an adhesive tape is used as a means for fixing and holding the article. As one of the above adhesive tapes, a temperature-sensitive adhesive layer that causes a reversible change from an adhesive state to a non-adhesive state in accordance with a temperature change is provided. There is a temperature-sensitive adhesive tape (see Patent Document 3) that can be fixed and unlocked by controlling the adhesive state and the non-adhesive state.

Furthermore, the temperature-sensitive adhesive tape is a cool-off type temperature-sensitive adhesive tape that is in an adhesive state at a temperature higher than a set temperature and is non-adhesive at a temperature lower than the set temperature (see Patent Document 4). There is a warm-off type temperature-sensitive adhesive tape (see Patent Document 5) that becomes adhesive at a temperature lower than a set temperature and becomes non-adhesive at a temperature higher than the set temperature. These are properly used according to the usage environment and the like.
JP-A-11-171314 Special table 2001-515002 JP 2003-129029 A JP 2003-183608 A JP 2000-355684 A JP 2000-271204 A

  The above-mentioned conventional steep angle raising / lowering belt conveyor is complicated in shape and structure, and is likely to be costly. Further, since the articles and applications that can be transported are limited, the steep angle raising / lowering belt can be used at low cost and can be used for many purposes. There is a need for a belt conveyor.

  In addition, it is considered to form a steep lift belt conveyor using the adhesive force of a temperature-sensitive adhesive tape that can control the adhesive state and the non-adhesive state. Various problems, such as difficulty in temperature and temperature reduction) and replacement when the temperature-sensitive adhesive layer of the temperature-sensitive adhesive tape deteriorates, have not been put into practical use. .

  Therefore, an object of the present invention is to provide a steep angle raising / lowering belt conveyor using a temperature-sensitive adhesive tape that can be used for various purposes with less restrictions on the conveyed items.

The present invention has the following technical means in order to achieve the above object.
That is, the conveyor belt 2 wound between the main driving roller 3 and the driven roller 4 and between the main driving roller 3 and the driven roller 4 is provided, and the conveyed product 14 is conveyed from the low position to the high position or from the high position to the low position. In the steep angle elevating belt conveyor 1, the steep angle elevating belt conveyor 1 has a conveyor belt 2 formed of a metal material having excellent heat conductivity and a reversible change from an adhesive state to a non-adhesive state in accordance with a temperature change. A temperature-sensitive adhesive tape 8 having a temperature-sensitive adhesive layer 12 to be raised is provided. The temperature-sensitive adhesive tape 8 has a base material 11 in between and a temperature-sensitive adhesive layer 12 on one side and a normal adhesive on the other side. The adhesive layer 13 is formed on the conveying surface 6 of the conveyor belt 2 so that the temperature-sensitive adhesive layer 12 is positioned on the upper side. 1 transport The space AB is composed of the upstream inclined conveyance section AC and the downstream horizontal conveyance section CB, and the temperature sensitive adhesive layer 12 of the temperature sensitive adhesive tape 8 is upstream of the conveyance start point A of the inclined conveyance section AC. Is provided with a temperature-adhering means 9 for bringing the temperature-sensitive adhesive layer 12 into a non-adhesive state in the horizontal conveying section CB. It is a steep angle raising / lowering belt conveyor using a temperature-sensitive adhesive tape, characterized in that an adhesive state forming means 10 is provided.

  And the said temperature sensitive adhesive tape 8 is affixed intermittently with the predetermined | prescribed adhesion space | interval W with respect to the conveyance surface 6 of the conveyor belt 2, or it is characterized by the above-mentioned. .

  Further, the temperature-sensitive adhesive tape 8 is a cool-off type in which the temperature-sensitive adhesive tape 8 is in an adhesive state at a temperature higher than a set temperature and is in a non-adhesive state at a temperature lower than the set temperature. The warm adhesive layer 12 is characterized in that it is brought into an adhesive state by a temperature rise due to heating of the adhesive state making means 9 and is brought into a non-adhesive state by a temperature decrease by cooling of the non-adhesion state making means 10.

  Further, the temperature-sensitive adhesive tape 8 is a warm-off type in which the temperature-sensitive adhesive tape 8 is in an adhesive state at a temperature lower than a set temperature and is in a non-adhesive state at a temperature higher than the set temperature. The temperature-sensitive adhesive layer 12 is characterized in that it is brought into an adhesive state by a decrease in temperature due to cooling of the adhesive state forming means 9 and is brought into a non-adhesive state by a temperature increase due to heating of the non-adhesive state forming means 10.

  The present invention is configured as described above, and uses the adhesive force of the temperature-sensitive adhesive layer 12 of the temperature-sensitive adhesive tape 8 adhered on the conveyance surface 6 of the conveyor belt 2 to incline the inclined conveyance section AC. The steep angle elevating belt conveyor 1 using a temperature-sensitive adhesive tape that prevents the conveyed product 14 from sliding down from the conveying surface 6 and has a simple structure but does not slide down the conveyed product 14 can be provided.

  Furthermore, the temperature-sensitive adhesive tape 8 is attached to the conveying surface 6 of the conveyor belt 2 formed of a metal material having excellent thermal conductivity, whereby the temperature-sensitive adhesive layer of the temperature-sensitive adhesive tape 8 is used. 12 temperature can be changed quickly and uniformly (temperature increase and decrease), temperature control of the temperature sensitive adhesive tape 8 can be easily performed, and the temperature sensitivity of the temperature sensitive adhesive tape 8 can be controlled. When the adhesive layer 12 is deteriorated, it is only necessary to replace the temperature-sensitive adhesive tape 8, so that the manufacturing cost and the maintenance cost of the steep angle elevating belt conveyor 1 using the temperature-sensitive adhesive tape can be kept low. .

  In addition, the temperature-sensitive adhesive tape 8 is thin, the flatness of the conveying surface 6 is maintained, and no crosspieces or grooves are positioned on the conveying surface 6 as in the prior art. It can be used for various purposes.

  The temperature-sensitive adhesive tape 8 is conveyed by appropriately selecting whether to adhere the temperature-sensitive adhesive tape 8 intermittently or continuously to the conveyance surface 6 of the conveyor belt 2 at a predetermined adhesion interval W. The adhesive strength of the article 14 can be adjusted according to the size and type, and the replacement frequency and replacement cost of the temperature-sensitive adhesive tape 8 can be reduced.

  Further, by selectively using the cool-off type and the warm-off type as the temperature-sensitive adhesive tape 8, the temperature-sensitive adhesive tape using the steep-angle raising / lowering belt conveyor 1 using the temperature-sensitive adhesive tape is finely selected and the kind of the conveyed product 14. The steep angle raising / lowering belt conveyor 1 which can respond | correspond and uses the temperature-sensitive adhesive tape with more convenient usability can be provided.

Next, a steep angle elevating belt conveyor using the temperature-sensitive adhesive tape of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a steep angle elevating belt conveyor 1 using an up-type temperature-sensitive adhesive tape that is used when a transported object 14 is transported from a low position to a high position. The case where the conveyed product 14 is conveyed from the upstream belt conveyor 15 to the downstream belt conveyor 16 located in a high position is shown.

  The steep angle elevating belt conveyor 1 using the temperature-sensitive adhesive tape includes a main driving roller 3 and a driven roller 4 and a conveyor belt 2 wound between the main driving roller 3 and the driven roller 4. The transport section AB (section from the transport start point A to the transport end point B) of the steep angle elevating belt conveyor 1 using the adhesive tape is an upstream inclined transport section AC (upward tilt with respect to the transport direction F) and downstream. Guide rollers 5a and 5b are arranged in a portion (inclined conveyance end / horizontal conveyance start point C) that is configured by the horizontal conveyance section CB on the side and moves from the inclined conveyance section AC to the horizontal conveyance section CB.

  The conveyor belt 2 is formed of a metal material having excellent thermal conductivity, such as steel, and a temperature-sensitive adhesive tape 8 is intermittently attached to the transport surface 6 of the conveyor belt 2 (FIG. 2). Reference), the sticking interval W of the temperature-sensitive adhesive tape 8 is set to be smaller than the length L of the transported object 14 in the transport direction F (see FIG. 3).

  The temperature-sensitive adhesive tape 8 includes a temperature-sensitive adhesive layer 12 that causes a reversible change from an adhesive state to a non-adhesive state in response to a temperature change. A temperature-sensitive adhesive layer 12 is formed on the side, and a normal non-temperature-sensitive adhesive layer 13 is formed on the other side, and the temperature-sensitive adhesive layer 12 is located above, that is, the temperature-sensitive adhesive is on the conveying surface 6 side. The adhesive layer 13 is stuck on the transport surface 6 of the conveyor belt 2 so that the layer 12 is exposed (see FIG. 4).

  And the sudden angle raising / lowering belt conveyor 1 using the temperature-sensitive adhesive tape of this invention is comprised as mentioned above, and the temperature sensitivity stuck on the conveyance surface 6 of the conveyor belt 2 with the predetermined sticking space | interval W. By using the adhesive force of the temperature-sensitive adhesive layer 12 in the adhesive tape 8, the conveyed product 14 is prevented from sliding off from the inclined conveying surface 6.

  Further, the temperature-sensitive adhesive layer 12 in the temperature-sensitive adhesive tape 8 is transferred when the conveyed product 14 is delivered from the upstream belt conveyor 15 and the conveyed product 14 is positioned on the inclined conveying surface 6, that is, In the inclined conveyance section AC, the temperature-sensitive adhesive layer 12 is in an adhesive state, and when the conveyed product 14 is delivered to the downstream belt conveyor 16, that is, in the horizontal conveyance section CB, the temperature-sensitive adhesive layer 12. The adhesive layer 12 is in a non-adhesive state.

  And in order to implement | achieve said state, a temperature sensitive adhesive is upstream from the conveyance start point A of the inclination conveyance area AC which comprises the conveyance area AB of the steep angle raising / lowering belt conveyor 1 using the said temperature sensitive adhesive tape. The adhesive state-setting means 9 is provided to bring the temperature-sensitive adhesive layer 12 of the tape 8 to a temperature at which it becomes an adhesive state, and the temperature-sensitive adhesive layer 12 of the temperature-sensitive adhesive tape 8 is non-adhesive in the horizontal conveyance section CB. The non-adhesion state making means 10 which makes the temperature become is arranged.

  Furthermore, the temperature-sensitive adhesive tape 8 is in an adhesive state at a temperature higher than the set temperature, and is in a non-adhesive state at a temperature lower than the set temperature, and an adhesive state at a temperature lower than the set temperature. There is a warm-off type that becomes non-adhesive at a temperature higher than the set temperature, and when using a cool-off type, the temperature-sensitive adhesive layer 12 of the temperature-sensitive adhesive tape 8 is in an adhesive state. When the warming-up means 9 is brought into a sticky state by heating and the non-sticking means 10 is cooled down to make it non-sticky, and when a warm-off type is used, a temperature-sensitive sticky is used. The temperature-sensitive adhesive layer 12 of the tape 8 is brought into an adhesive state by reducing the temperature by cooling the adhesive state-making means 9, and is brought into a non-adhesive state by raising the temperature by heating the non-adhesive state means 10. It is.

  And as the said adhesion state making means 9 and the non-adhesion state making means 10, the temperature sensitive adhesive layer 12 of the temperature sensitive adhesive tape 8 stuck on the conveyance surface 6 of the conveyor belt 2 and the conveyor belt 2 is heated. Or, various means / devices that can be cooled are considered. When heating is performed by heating, an electric heater, an infrared lamp, a heating apparatus using radiant heat or radiant heat from a far infrared lamp, Heating devices that use hot air that blows hot air, heating devices that use a heating medium such as hot water, etc. are used, and when cooling by cooling, cooling devices that use cold air that blows cold air, cold water, etc. A cooling device using a cooling medium is used.

  Further, the heating and cooling by the above-mentioned adhesion state-making means 9 and non-adhesion-state means 10 are heating provided above the conveying surface 6 of the conveyor belt 2 (FIG. 9) and the back surface 7 side of the conveyor belt 2 (FIG. 10). It is performed directly or indirectly by the means 17 or the cooling means 18, and the conveyor belt 2 is formed of a metal material having excellent heat conductivity, so that the temperature-sensitive adhesive tape 8 is indirectly heated. Therefore, the temperature-sensitive adhesive tape 8 is heated and heated by the temperature-sensitive adhesive tape 8 so that the temperature is reduced quickly and uniformly.

  The solid line arrows shown in FIGS. 9 and 10 indicate the flow of heat when the temperature is raised by heating, and the broken line arrow indicates the flow of heat when the temperature is lowered by cooling. Yes.

  Furthermore, as shown in FIG. 5, it is considered that the temperature-sensitive adhesive tape 8 is continuously attached to the transport surface 6 of the conveyor belt 2. In this case, the length of the transport direction F is long. A steep angle elevating belt conveyor using a temperature-sensitive adhesive tape that can accommodate various sizes of conveyed items 14 and is suitable for conveying various types of conveyed items 14 using the same line. 1 can be provided.

  FIG. 6 shows a steep angle elevating belt conveyor 1 that uses a downward-type temperature-sensitive adhesive tape that is used when the conveyed product 14 is conveyed from a high position to a low position, and an upstream belt located at a high position. The case where the conveyed product 14 is conveyed from the conveyor 15 to the downstream belt conveyor 16 located in a low position is shown.

  And the steep angle raising / lowering belt conveyor 1 using this type of temperature-sensitive adhesive tape of the down type is that the inclination of the inclined conveyance section AC in the conveyance section AB is a downward inclination with respect to the conveyance direction F and the inclined conveyance section AC. Positions and forms of the guide rollers 5c, 5d for shifting to the horizontal transport section CB (not shown, but the guide rollers 5c, 5d, in particular, the guide roller 5c is a transport object 14 positioned on the transport surface 6). (Similarly, only the side edge of the conveyor belt 2 is guided from the conveying surface 6 side) so that it does not become a hindrance, the same as the steep angle elevating belt conveyor 1 using the upward type temperature-sensitive adhesive tape described above. Therefore, the detailed description thereof is omitted.

Next, based on the said structure, the action | operation of the steep angle raising / lowering belt conveyor 1 using the temperature-sensitive adhesive tape of this invention is demonstrated.
As described above, the temperature-sensitive adhesive tape 8 includes a cool-off type and a warm-off type. First, the temperature-sensitive adhesive when the cool-off type temperature-sensitive adhesive tape 8 shown in FIG. 7 is used. Based on the change in the temperature of the tape 8 (the temperature-sensitive adhesive layer 12) and the change in the adhesive force, the operation of the steep elevation belt conveyor 1 using the cool-off type temperature-sensitive adhesive tape will be described.

  The steep angle elevating belt conveyor 1 using a cool-off type temperature-sensitive adhesive tape is in an adhesive state arranged upstream of the inclined conveyance section AC constituting the upstream side of the conveyance section AB when conveying the conveyed product 14. The temperature-sensitive adhesive tape 8 is heated by the converting means 9, and the temperature-sensitive adhesive tape 8 is higher than the temperature at which the temperature-sensitive adhesive layer 12 is a boundary between the adhesive state and the non-adhesive state (hereinafter referred to as switching temperature ST). The temperature is raised to the temperature, and the adhesive state is set at the conveyance start point A.

  This adhesive state continues until the temperature-sensitive adhesive tape 8 is cooled by the non-adhesive state forming means 10 arranged in the horizontal conveyance section CB that forms the downstream side of the conveyance section AB, and is cooled and switched to the switching temperature ST. By reducing the temperature to a lower temperature, the temperature-sensitive adhesive tape 8 is brought into a non-adhesive state at the conveyance end point B.

  That is, since the temperature-sensitive adhesive layer 12 of the temperature-sensitive adhesive tape 8 is in an adhesive state in the inclined conveyance section AC in the conveyance section AB, the conveyed product 14 delivered from the upstream belt conveyor 15 is inclined in the inclined conveyance section AC. In this case, it is transported in a state of being adhered to the temperature-sensitive adhesive layer 12, and the transported object 14 is reliably prevented from sliding off from the transport surface 6 inclined.

  Furthermore, it is cooled in the horizontal conveyance section CB, and at the conveyance end point B, the temperature-sensitive adhesive layer 12 of the temperature-sensitive adhesive tape 8 is brought into a non-adhesive state, so that the conveyed product 14 and the temperature-sensitive adhesive layer 12 Thus, the transfer of the conveyed product 14 from the conveyance end point B to the downstream belt conveyor 16 can be performed smoothly.

  Next, based on the change in temperature and adhesive force of the temperature-sensitive adhesive tape 8 (temperature-sensitive adhesive layer) when the warm-off type temperature-sensitive adhesive tape 8 shown in FIG. The operation of the steep angle elevating belt conveyor 1 using a type of temperature-sensitive adhesive tape will be described.

  In the steep angle raising / lowering belt conveyor 1 using a warm-off type temperature-sensitive adhesive tape, when conveying the conveyed product 14, the adhesive state arranged upstream of the inclined conveying section AC constituting the upstream side of the conveying section AB. The temperature-sensitive adhesive tape 8 is cooled by the adjusting means 9, and the temperature-sensitive adhesive tape 8 is cooled to a temperature lower than the switching temperature ST, and the adhesive state at the conveyance start point A is Has been.

  This adhesive state continues until the temperature-sensitive adhesive tape 8 is heated by the non-adhesive state forming means 10 arranged in the horizontal conveyance section CB that forms the downstream side of the conveyance section AB, and is heated to the switching temperature ST. By raising the temperature to a higher temperature, the temperature-sensitive adhesive tape 8 is brought into a non-adhesive state at the conveyance end point B.

  Also in this case, the conveyed product 14 is reliably conveyed without sliding down from the inclined conveying surface 6, and the conveyed item 14 is smoothly transferred to the downstream belt conveyor 16.

  And as mentioned above, the steep angle elevating belt conveyor 1 using the temperature-sensitive adhesive tape of the present invention can reliably convey the conveyed product 14 from the low position to the high position or from the high position to the low position, And since it is a very simple structure, there are few restrictions of a conveyed product and it can utilize for various uses.

  Further, in the steep angle elevating belt conveyor 1 using the temperature sensitive adhesive tape, whether the cool-off type temperature sensitive adhesive tape 8 or the warm-off type temperature sensitive adhesive tape 8 is used is It can be selected as appropriate according to the use environment and application, and the type of the conveyed product 14, and its usability is very good.

  Furthermore, when the temperature-sensitive adhesive tape 8 is a cool-off type as described above, the sticking state making means 9 and the non-sticking state means 10 are the heating means 17 and the non-sticking state. The cooling means 18 is used as the means 10, and in the case of the warm-off type, the cooling means 18 is used as the sticking state means 9, and the heating means 17 is used as the non-sticking means 10. In order to enhance the versatility of the steep angle elevating belt conveyor 1 using a tape, it is preferable that both the cool-off type and the worm-off type can be supported.

  Therefore, an example of a heating / cooling device capable of performing both heating and cooling is shown in order to make the above-mentioned adhesion state making means 9 and non-adhesion state making means 10 compatible with both the cool-off type and the warm-off type. 11 and 12 will be described in detail below.

  The heating / cooling device 21 serving as the adhesion state forming unit 9 and the non-adhesion state forming unit 10 is disposed so as to be in contact with the back surface 7 of the conveyor belt 2 and includes a heating / cooling unit 22 in which a medium passage 29 is formed. In addition, a primary side pipe 25 and a secondary side pipe 26 for circulating the heated or cooled medium are connected to the medium passage 29 of the heating / cooling unit 22.

  Between the primary side pipe line 25 and the secondary side pipe line 26, a medium heating means 23 and a medium cooling means 24 are arranged in parallel via switching valves 28a and 28b. Heating or cooling of the medium sent to the medium passage 29 is selected, and the heated or cooled medium is delivered to the medium flow path 29 by a pump 27 disposed in the secondary side pipe 26. Is done.

  Then, by using the medium sent to the medium passage 29 formed in the heating / cooling section 22 as a heating medium or a cooling medium, the heating / cooling section 22 can be used as a heating means or a cooling means. By using the cooling device 21 as the sticking state making means 9 and the non-sticking state making means 10, it becomes possible to switch the sticking state making means 9 and the non-sticking state making means 10 to a heating means or a cooling means as required. It becomes possible to deal with both the cool-off type and the warm-off type temperature-sensitive adhesive tape 8.

  In addition, it is considered that the periphery and the upper part of the heating / cooling unit 22 constituting the heating / cooling device are covered with a cover 30, and the temperature-sensitive adhesive tape 8 is heated by the adhesion state-making unit 9 and the non-adhesion state-unit 10. And cooling can be performed efficiently.

Next, an example of the cool-off type temperature-sensitive adhesive tape 8 used in the steep angle elevating belt conveyor 1 using the temperature-sensitive adhesive tape of the present invention will be described in detail.
The temperature-sensitive adhesive layer 12 of the cool-off type temperature-sensitive adhesive tape 8 has a temperature (switching temperature ST) between 20 to 50 ° C. between the adhesive state and the non-adhesive state depending on the use environment and application. By setting the switching temperature ST and giving a temperature difference of about 10 ° C., the adhesive force changes abruptly.

  The temperature-sensitive adhesive layer 12 is composed of an acrylic acid alkyl ester and / or a methacrylic acid alkyl ester having a linear alkyl group having 16 or more carbon atoms as a side chain, and a temperature range narrower than about 35 ° C. Formed from an adhesive composition containing a side-chain crystallizable polymer having a melting point (first dissolution transition) occurring over the range, wherein the side-chain crystallizable polymer is an acrylic acid having 1 to 6 carbon atoms in the alkyl group Alkyl ester and / or methacrylic acid alkyl ester 40 to 70% by weight, carboxy group-containing ethylenically unsaturated monomer 2 to 10% by weight, alkyl acid alkyl ester having 16 to 22 carbon atoms and / or It is obtained from a monomer mixture containing 20 to 55% by weight of methacrylic acid alkyl ester.

  As the base material 11, a single layer of a synthetic resin film such as polyethylene, polypropylene, polyester, polyamide, polycarbonate, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer, ethylene polypropylene copolymer, polyvinyl chloride, etc. Alternatively, a sheet having a thickness of 5 to 500 μm composed of these multilayers is considered.

  The pressure-sensitive adhesive layer 13 (ordinary pressure-sensitive adhesive layer) is a pressure-sensitive adhesive, such as a natural rubber adhesive, a synthetic rubber adhesive, a styrene / butadiene latex-based adhesive, or a block copolymer. Body-type thermoplastic rubber, butyl rubber, polyisobutylene, acrylic adhesive, vinyl ether copolymer adhesive composition, and the like are considered.

Next, an example of the warm-off type temperature-sensitive adhesive tape 8 used in the steep angle elevating belt conveyor 1 using the temperature-sensitive adhesive tape of the present invention will be described.
The temperature-sensitive adhesive layer 12 of the warm-off type temperature-sensitive adhesive tape 8 has a temperature (switching temperature ST) between 20 to 50 ° C. between the adhesive state and the non-adhesive state depending on the use environment and application. By setting the temperature difference of about 5 ° C. between the switching temperatures ST, the adhesive force changes rapidly.

  The temperature-sensitive adhesive layer 12 is formed from an adhesive composition containing a pressure-sensitive adhesive and a side-chain crystallizable polymer, and the side-chain crystallizable polymer has an alkyl group having 1 to 1 carbon atoms. 6 acrylic acid alkyl ester and / or methacrylic acid alkyl ester 40 to 70% by weight, carboxy group-containing ethylenically unsaturated monomer 2 to 10% by weight, and alkyl acid acrylic acid alkyl ester having 16 or more carbon atoms And / or 20 to 50% by weight of a methacrylic acid alkyl ester, and the polymer has a weight average molecular weight of 3,000 to 25,000.

  And since it is the same as that of the said cool-off type about the base material 11 and the adhesion layer 13, it abbreviate | omits about the detail.

  In addition, the said Example 1 and Example 2 are typical examples of the temperature-sensitive adhesive tape 8 of a cool-off type and a warm-off type, and the temperature-sensitive adhesive tape 8 other than what was mentioned above is utilized for this invention. Of course it is also possible.

It is a block diagram of the steep angle raising / lowering belt conveyor (uphill type) using the temperature-sensitive adhesive tape of this invention. It is a P arrow development view in FIG. It is the elements on larger scale in FIG. It is sectional drawing which follows the XX line in FIG. It is an expanded view which shows the other sticking example of a temperature sensitive adhesive tape. It is a block diagram of the steep angle raising / lowering belt conveyor (downward type) using the temperature-sensitive adhesive tape of this invention. It is a figure which shows the change of the temperature in a cool-off type thermosensitive adhesive tape, and the change of adhesive force. It is a figure which shows the change of the temperature in a warm-off type thermosensitive adhesive tape, and the change of adhesive force. It is a figure which shows the state at the time of heating or cooling a temperature sensitive adhesive tape from upper direction. It is a figure which shows the state at the time of heating a thermosensitive adhesive tape from the downward direction or cooling. It is a block diagram which shows the example of a heating / cooling apparatus. It is sectional drawing which follows the YY line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steep angle raising / lowering belt conveyor 2 Conveyor belt 3 Main drive roller 4 Driven roller 5a, 5b, 5c, 5d Guide roller 6 Conveyance surface 7 Back surface 8 Temperature-sensitive adhesive tape 9 Adhesion state making means 10 Non-adhesion state making means 11 Base material 12 Temperature-sensitive adhesive layer 13 Adhesive layer 14 Conveyed material 15a, 15b Upstream belt conveyor 16a, 16b Downstream belt conveyor 17 Heating means 18 Cooling means 21 Heating / cooling device 22 Heating / cooling unit 23 Medium heating means 24 Medium cooling means 25 Primary side piping 26 Secondary side piping 27 Pump 28a, 28b Switching valve 29 Media passage 30 Cover A Transfer start point B Transfer end point C Inclined transfer end / Horizontal transfer start point AB transfer section AC Inclined transfer section CB Horizontal transfer section F Transfer Direction L Length in transport direction of transported object W Adhesion interval of temperature-sensitive adhesive tape S Switching temperature

Claims (5)

A conveyor belt (2) wound between the main driving roller (3) and the driven roller (4) and between the main driving roller (3) and the driven roller (4) is provided, and the conveyed product (14) is moved from a low position to a high position. Alternatively, in the steep angle lifting belt conveyor (1) that conveys from the high position to the low position,
The steep angle elevating belt conveyor (1) includes a conveyor belt (2) formed of a metal material having excellent thermal conductivity, and a temperature sensitivity that causes a reversible change from an adhesive state to a non-adhesive state in response to a temperature change. A temperature-sensitive adhesive tape (8) having an adhesive layer (12) is provided, and the temperature-sensitive adhesive tape (8) has a temperature-sensitive adhesive layer (12) on one side with the substrate (11) in between, A normal pressure-sensitive adhesive layer (13) is formed on the other side, and the pressure-sensitive adhesive layer (13) is placed on the conveying surface (6) of the conveyor belt (2) so that the temperature-sensitive pressure-sensitive adhesive layer (12) is positioned above. Further, the conveying section (AB) of the steep angle elevating belt conveyor (1) is constituted by an upstream inclined conveying section (AC) and a downstream horizontal conveying section (CB), Temperature sensitivity upstream of the conveyance start point (A) in the inclined conveyance section (AC) A temperature-sensitive adhesive means (9) for placing the temperature-sensitive adhesive layer (12) of the pressure-sensitive adhesive tape (8) into a pressure-sensitive adhesive state is provided, and the temperature-sensitive pressure-sensitive adhesive tape is disposed in the horizontal conveyance section (CB). A steep angle using a temperature-sensitive adhesive tape, characterized in that non-adhesive means (10) is provided to bring the temperature-sensitive adhesive layer (12) of (8) to a temperature at which it becomes a non-adhesive state. Elevating belt conveyor. The said temperature sensitive adhesive tape (8) is affixed intermittently with the predetermined adhesion space | interval (W) with respect to the conveyance surface (6) of a conveyor belt (2). A steep angle elevating belt conveyor using the described temperature-sensitive adhesive tape. The temperature-sensitive adhesive tape according to claim 1, wherein the temperature-sensitive adhesive tape (8) is continuously adhered to the conveying surface (6) of the conveyor belt (2). A steep angle lifting belt conveyor. The temperature-sensitive adhesive tape (8) is a cool-off type that is in an adhesive state at a temperature higher than a set temperature, and is in a non-adhesive state at a temperature lower than the set temperature. The temperature-sensitive adhesive tape (8) The temperature-sensitive adhesive layer (12) is brought into a sticky state by heating due to heating of the sticky state making means (9), and made into a non-sticky state by reducing the temperature by cooling of the non-sticky means (10). A steep angle elevating belt conveyor using the temperature-sensitive adhesive tape according to any one of claims 1, 2, and 3. The temperature-sensitive adhesive tape (8) is a warm-off type that is in an adhesive state at a temperature lower than a set temperature and is in a non-adhesive state at a temperature higher than the set temperature, and the temperature-sensitive adhesive tape (8) The temperature-sensitive adhesive layer (12) is brought into an adhesive state by the temperature reduction by cooling of the adhesive state-making means (9), and is brought into a non-adhesive state by the temperature rise by heating of the non-adhesive state means (10). A steep angle elevating belt conveyor using the temperature-sensitive adhesive tape according to any one of claims 1, 2, and 3.

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